Constructing a bio-based flame retardant coating through co-depositing polydopamine and guanosine 5′-monophosphate disodium salt (GMP) for flexible polyurethane foam
作者：通過(guò)共沉積聚多巴胺和鳥(niǎo)苷 5''''-單磷酸二鈉鹽 (GMP) 構(gòu)建用于軟質(zhì)聚氨酯泡沫的生物基阻燃涂層D. Meng
關(guān)鍵字：Foam materials,Fire retardancy,Co-deposition,Bio-based compounds,Surface coating
論文來(lái)源：期刊
發(fā)表時(shí)間：2022年
The fire hazard posed by the inherent flammability and smoke toxicity of flexible polyurethane foam (FPUF) often necessitates the incorporation of flame retardants to meet stringent regulations. The development of environmentally friendly strategies to enhance the fire resistance of FPUF is of increasing importance and a significant amount of research has been devoted to this end. In this work, a bio-based coating was constructed by co-depositing polydopamine and guanosine 5′-monophosphate disodium salt (GMP) to increase the fire safety of FPUF. The coating significantly improved the flame retardancy of FPUF. The FPUF@PDA-GMP samples showed an LOI value of 24.5% with a self-extinguishing effect and exhibited reduced release of heat, smoke, CO, CO2, and HCN due to their compact and strong char. The compressive strength at 70% strain of FPUF@PDA-GMP was 8 times higher than that of the control FPUF sample. The coating had a little negative effect on the resilience and improved its elongation at break. This investigation has provided a useful method for designing and producing high-performance foams.
軟質(zhì)聚氨酯泡沫 (FPUF) 固有的易燃性和煙霧毒性造成的火災(zāi)危險(xiǎn)通常需要加入阻燃劑以滿足嚴(yán)格的法規(guī)。開(kāi)發(fā)提高 FPUF 耐火性的環(huán)保策略變得越來(lái)越重要，為此已進(jìn)行了大量研究。在這項(xiàng)工作中，通過(guò)共沉積聚多巴胺和鳥(niǎo)苷 5'-單磷酸二鈉鹽 (GMP) 構(gòu)建生物基涂層，以提高 FPUF 的防火安全性。該涂層顯著提高了FPUF的阻燃性。FPUF@PDA-GMP 樣品顯示出 24.5% 的 LOI 值，具有自熄效果，并表現(xiàn)出減少的熱量、煙霧、CO、CO 2釋放, 和 HCN 由于其緊湊和強(qiáng)焦。FPUF@PDA-GMP 在 70% 應(yīng)變下的抗壓強(qiáng)度是對(duì)照 FPUF 樣品的 8 倍。涂層對(duì)回彈性有一點(diǎn)負(fù)面影響并提高了斷裂伸長(zhǎng)率。該研究為設(shè)計(jì)和生產(chǎn)高性能泡沫提供了一種有用的方法。